Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
1600271severely pollutedgood521excellent
1500300severely pollutedlightly polluted621excellent
1400229severely pollutedgood491excellent
1300252severely pollutedgood481excellent
1200241severely pollutedgood481excellent
1100240severely pollutedgood491excellent
1000228severely pollutedgood481excellent
0900204severely pollutedgood421excellent
0800203severely pollutedgood391excellent
0700231severely pollutedgood421excellent
0600227severely pollutedgood411excellent
0500198heavily pollutedgood351excellent
0400196heavily pollutedgood371excellent
0300204severely pollutedgood371excellent
0200221severely pollutedgood461excellent
0100241severely pollutedgood401excellent
0000234severely pollutedgood431excellent
2300272severely pollutedgood551excellent
2200285severely pollutedgood501excellent
2100300severely pollutedgood551excellent
2000299severely pollutedgood601excellent
1900265severely pollutedgood481excellent
1800286severely pollutedgood601excellent
1700300severely pollutedlightly polluted681excellent